\documentclass[titlepage,a4paper,11pt]{article}

\usepackage{multicol}
\usepackage{graphicx} % for including images
\usepackage[usenames,dvipsnames]{color}    % coloured text (color... pffft americans!!!!)
\usepackage{natbib}   % for harvard referencing
\usepackage{fancyhdr} % for putting the db logo in the header
\setlength{\headheight}{29pt}

\definecolor{dbBlue}{RGB}{0,24,168}
\definecolor{warwickBlue}{RGB}{0,120,175}

\pagestyle{fancy}
\fancyhead{}
\fancyhead[R]{\includegraphics[scale=0.25]{./logo.ps}}
\fancyhead[L]{\textcolor{dbBlue}{Deutsche Bank} \\ \textcolor{warwickBlue}{GTO}}
\renewcommand{\headrulewidth}{0.2pt}
%need to put in some footers

\bibliographystyle{plainnat}


\begin{document}

\include{title}

\begin{abstract}
THE ABSTRACT
\end{abstract}

\tableofcontents
%\setcounter{secnumdepth}{-1} %this turns off chapter numbering (except in the toc)

\include{Introduction}
\include{Implementation}
\include{Use} %use cases
\include{Testing}
\include{Contributions}
\include{Summary}


%It holds \citep{KarelRektorys} the following bla blah blahh %testing... this is how to do a reference

\clearpage
\addcontentsline{toc}{section}{Bibliography}
\begin{thebibliography}{9}
\bibitem [Rektorys (1975)]{KarelRektorys}Rektorys, K., \textit{Variational methods in Mathematics,
Science and Engineering}, D. Reidel Publishing Company,
Dordrecht-Hollanf/Boston-U.S.A., 2th edition, 1975

\end{thebibliography}

\end{document}

